How does one remove the J-tubes? |
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How does one remove the J-tubes? |
doug_b_928 |
May 21 2017, 05:33 PM
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#1
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Senior Member Group: Members Posts: 692 Joined: 17-January 13 From: Winnipeg Member No.: 15,382 Region Association: Canada |
I can see the brackets that are spot welded to the longs (the bottom halves of mine have disintegrated along with the bottoms of the longs), but how are the J-tubes held in at the top of the long at the front (where it comes through the long and into the cabin) and at the firewall in the rear (mine appears to have brushed on seam sealer around it)?
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malcolm2 |
May 21 2017, 06:03 PM
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#2
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Advanced Member Group: Members Posts: 2,743 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States |
I have the 75 HE set up. It only has cheese head screws. One the attaches the tube to the HE and then a tab that attaches the top of the tube to the engine tin. Bottom one is horizontal, probably well hidden. Have to access under the car. reach above the HE. Top one is access thru the engine compartment.
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doug_b_928 |
May 21 2017, 06:23 PM
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#3
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Senior Member Group: Members Posts: 692 Joined: 17-January 13 From: Winnipeg Member No.: 15,382 Region Association: Canada |
I think I'm probably using the wrong terminology, my apologies. I mean the steel tubes that are in the front and back of the longs.
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bdstone914 |
May 22 2017, 06:52 AM
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#4
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bdstone914 Group: Members Posts: 4,514 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
.Why do you need to remove them? they are welded in.
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doug_b_928 |
May 22 2017, 07:26 AM
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#5
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Senior Member Group: Members Posts: 692 Joined: 17-January 13 From: Winnipeg Member No.: 15,382 Region Association: Canada |
I was thinking if it's not too difficult it would make repairing the long easier. The lower half of the long needs to be replaced. The car hasn't been touched for at least 32 years and someone had done a bunch of patching to the longs from the cabin side (side of long angling to the floor) and bottom of long bridging to the underside of the floor. In other words, it was rusted out that long ago (before I bought the car), so you can imagine what it is like now.
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mgphoto |
May 22 2017, 07:51 AM
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#6
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"If there is a mistake it will find me" Group: Members Posts: 1,337 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California |
The outer long cover has to be removed to take the heater tubes out, there is a bracket for each tube that must be detached inside the long, the brackets stabalize the tubes to attach to the air baffels inside the long, which are held in place by large circular clips.
Racers will remove these to save weight, they don't need heat. Mike |
doug_b_928 |
May 22 2017, 07:59 AM
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#7
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Senior Member Group: Members Posts: 692 Joined: 17-January 13 From: Winnipeg Member No.: 15,382 Region Association: Canada |
I have he outer clamshell off, silencer out, and can see how the brackets are spot welded to the side and top of the long. Are the air tubes welded where the exit (at the upper long for the front one and at the firewall for the rear one? If not, then they should be fairly easy to remove, no?
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Dion |
May 22 2017, 07:59 AM
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#8
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RN Group: Members Posts: 2,763 Joined: 16-September 04 From: Audubon,PA Member No.: 2,766 Region Association: MidAtlantic Region |
Doug I'm there now with my build.
They have a tab holding them. Remove the spot welds to take them out. BUT you need to open up the long. Oh it's fun... Attached thumbnail(s) |
Dion |
May 22 2017, 08:01 AM
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#9
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RN Group: Members Posts: 2,763 Joined: 16-September 04 From: Audubon,PA Member No.: 2,766 Region Association: MidAtlantic Region |
Opening
Attached thumbnail(s) |
mgphoto |
May 22 2017, 08:05 AM
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#10
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"If there is a mistake it will find me" Group: Members Posts: 1,337 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California |
there should be two mig welds on either side of the tube as it protrudes from the long, front in the cabin and the rear engine bay. Small cutting wheel does the trick.
Mike |
doug_b_928 |
May 22 2017, 08:05 AM
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#11
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Senior Member Group: Members Posts: 692 Joined: 17-January 13 From: Winnipeg Member No.: 15,382 Region Association: Canada |
Thanks for the pics. So they are not welded anywhere else other than that bracket....
Is it the same for the front air tube? |
doug_b_928 |
May 22 2017, 08:08 AM
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#12
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Senior Member Group: Members Posts: 692 Joined: 17-January 13 From: Winnipeg Member No.: 15,382 Region Association: Canada |
Thanks Mike. We must have hit submit at the same time.
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Dion |
May 22 2017, 08:22 AM
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#13
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RN Group: Members Posts: 2,763 Joined: 16-September 04 From: Audubon,PA Member No.: 2,766 Region Association: MidAtlantic Region |
Tube out. Bracket with spot welds removed.
Attached thumbnail(s) |
mbseto |
May 23 2017, 09:05 AM
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#14
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Senior Member Group: Members Posts: 1,253 Joined: 6-August 14 From: Cincy Member No.: 17,743 Region Association: North East States |
Mine had two or three spot welds (it varied). I think they were not the last thing to go on because one of the welds was unreachable by a grinder and I presume a welder. I ended up chiselling the last one. It beat up the elbow a bit, but nothing that can't be tapped out with a body hammer. Once primed and repainted, it will be fine.
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TargaToy |
May 23 2017, 11:22 AM
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#15
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-NONSOLIS RADIOS SEDIOUIS FULMINA MITTO- Group: Members Posts: 692 Joined: 26-March 10 From: DelMarVa Peninsula Member No.: 11,509 Region Association: MidAtlantic Region |
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doug_b_928 |
May 23 2017, 11:33 AM
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#16
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Senior Member Group: Members Posts: 692 Joined: 17-January 13 From: Winnipeg Member No.: 15,382 Region Association: Canada |
The bottom of mine is completely gone.
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TargaToy |
May 23 2017, 03:58 PM
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#17
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-NONSOLIS RADIOS SEDIOUIS FULMINA MITTO- Group: Members Posts: 692 Joined: 26-March 10 From: DelMarVa Peninsula Member No.: 11,509 Region Association: MidAtlantic Region |
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doug_b_928 |
May 23 2017, 07:26 PM
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#18
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Senior Member Group: Members Posts: 692 Joined: 17-January 13 From: Winnipeg Member No.: 15,382 Region Association: Canada |
That's a great pic, thanks!
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r_towle |
May 23 2017, 08:07 PM
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#19
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Custom Member Group: Members Posts: 24,569 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
True
Attached thumbnail(s) |
doug_b_928 |
May 26 2017, 07:46 PM
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#20
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Senior Member Group: Members Posts: 692 Joined: 17-January 13 From: Winnipeg Member No.: 15,382 Region Association: Canada |
True, indeed. 'Hans' must have done the welding on my car and Matthew's because my front one was also welded in a preposterously ridiculous place. I tried every tool I have but nothing could reach it. I eventually had to weaken the metal for that weld... just another patch to add to the ever-growing list.
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